What are common Thermador appliance issues?
Common Thermador issues usually fall into a few buckets: gas ignition problems (clicking but no flame), uneven heating or temperature swings, drainage or leak symptoms, and intermittent electrical behavior. For Thermador PRDS366 range and star burner setups, the most frequent day-to-day complaint is burner ignition and flame quality.
- Gas ranges/cooktops (including PRDS366 burners): burner won’t ignite, constant clicking, weak/uneven flame, flame goes out
- Ovens: not heating, bakes unevenly, broil not working, long preheat times
- Dishwashers: not draining, poor cleaning, water left in tub, door leaks
- Refrigerators: not cold enough, ice maker not working, water leaks, noisy operation
- Confirm the gas supply valve is fully open and other gas appliances work normally.
- Clean and dry burner caps and ports; moisture and debris commonly cause clicking and mis-ignition.
- Make sure burner parts are seated correctly after cleaning.
- For ovens, verify the correct bake mode and avoid blocking airflow with oversized pans.
- For any unit with odd electrical symptoms, reset power at the breaker for 1 minute, then restore.
| Symptom | Most common cause | What to do next |
|---|---|---|
| Clicking but no flame | Wet/dirty burner parts, misaligned cap | Clean, dry, reseat burner parts |
| Weak yellow flame | Clogged ports, airflow issue | Clean ports; check for proper cap placement |
| Oven temp off | Sensor drift, calibration needed | Use an oven thermometer; adjust settings if available |
| Dishwasher won’t drain | Clog in filter/drain path | Clean filter area; check drain hose routing |
Catching ignition, heating, and drainage problems early helps prevent repeat failures, reduces soot and odor issues on gas burners, and avoids secondary damage like overheating components or water leaks.
If you’re ordering accessories or trying to confirm you have the right model information before buying, use how to find your appliance model number (and what it means for parts).
Last updated: February 2026
What is the part number of Thermador igniter?
For the Thermador PRDS366, the igniter part number depends on which igniter you mean (surface burner spark igniter, oven bake igniter, or broil igniter) and the exact PRDS366 version. We match the correct igniter by using your model’s parts breakdown and the igniter’s location.
Use these quick checks before ordering:
- Surface burner not clicking/sparking: you’re usually looking for a spark electrode (surface igniter) at that burner.
- Oven won’t heat but you smell gas: you’re usually looking for an oven hot surface igniter (glow bar).
- Broil won’t light: you’re usually looking for a broil igniter (if equipped).
- Only one burner fails: it’s typically a single-burner electrode/igniter, not a module.
- All burners fail to spark: it’s often the spark module, wiring, or power supply issue.
Because this PRDS366 accessory parts page does not list model-specific igniter part pages, the most reliable way to get the exact Thermador igniter part number is to confirm the full model ID from the rating plate, then match the igniter by diagram and position.
- Confirm the model number is PRDS366 and note any suffix/version details.
- Identify the igniter location (left front burner, oven bake, etc.).
- Compare the old part’s markings (if any) and connector style.
For help locating and confirming the full model number format we use for parts matching, see how to find your appliance model number (and what it means for parts).
| Igniter type | Where it is | What it does |
|---|---|---|
| Spark electrode (surface igniter) | At each surface burner | Creates the spark to light the burner |
| Hot surface igniter (oven) | Near bake burner | Heats up to ignite gas for baking |
| Spark module (ignition module) | Inside range body | Sends spark to one or more electrodes |
Thermador ranges often use different igniters across burners and oven functions; ordering by a generic “Thermador igniter” number can lead to the wrong fit, wrong connector, or incorrect mounting.
Last updated: February 2026
Why is my Thermador stove burner not igniting?
On a Thermador PRDS366, a burner usually won’t ignite when the burner ports or igniter area are wet, greasy, or clogged, or when the igniter is not sparking consistently. Cleaning and drying the burner head and confirming you have a strong spark at the electrode fixes most no-ignite problems.
- Make sure the burner cap is seated flat and centered on the burner head.
- Dry the burner head and around the igniter electrode after boil-overs or cleaning.
- Clear clogged burner ports with a soft brush or wooden toothpick (don’t enlarge the holes).
- Listen for clicking; if it clicks but won’t light, the ports are usually blocked or the cap is misaligned.
- If there’s no clicking, check for a tripped breaker or a loose power cord (spark ignition needs power).
| What you notice | Likely cause | What we recommend |
|---|---|---|
| Clicks, gas smell, no flame | Clogged ports or mis-seated cap | Clean ports; reseat cap; try again |
| Clicks, no gas smell | Gas supply issue | Confirm other burners work; verify gas shutoff valve is open |
| No clicking on any burner | No power to ignition | Restore power; then retest |
| One burner clicks weakly or intermittently | Dirty/worn igniter electrode or wiring issue | Clean and dry; inspect wire connection; replace failed components |
A weak spark or restricted gas flow can prevent ignition and can also cause delayed ignition (a “whoosh” when it finally lights). Keeping the burner ports and igniter area clean helps the star burner light quickly and burn evenly.
If you’re comfortable doing basic checks, use our safety and tool tips in are diy appliance repairs safe and must have tools for appliance repair before inspecting wiring, switches, or ignition components.
Last updated: February 2026
